User manual

8. Questions and answers 37
8. Questions and answers
This chapter gives answers to frequently asked questions.
Question Possible causes Possible solution
is lit (bottom right · Instrument battery is · Replace instrument
in display). almost spent. battery.
Instrument switches · Auto Off function · Switch function off.
itself off automatically. is switched on.
· Residual capacity · Replace battery.
of battery is too low.
Display:
uuuuu · Permitted measuring range · Keep to permitted
was undershot. measuring range.
Display: ooooo · Permitted measuring range · Keep to permitted
was exceeded. measuring range.
If we are unable to answer your question, please contact
your dealer or Testo Customer Service. Contact details can
be found on the guarantee card or on the Internet under
www.testo.com .
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